Lock



A. I. WYCHERLEY.

Patented Mar. 22, 1921.

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A. J. WYCHERLEY'.

LOCK. APPLICATION FILED OCT. 25, 1920.

1,372,584. Patentd Mar. 22, 1921.

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A. J. WYCHERLEY.

LOCK. KPRLICA'HON FILED OCT- 25,1920- 37 Patented Mar. 22, 1921.

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ARTHUR Jnrrnnson WYCI-IERLEY, or TELLINGTON, new zzentnnn;

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T 0 all w 720m it may concern.

Be it known that I, ARTHUR J nrrnnsoN \Vvorncnnnv, a subject of the Kingof England, and residing at Wellington, New Zealand, have inventedcertain new and useful Improvements in Locks, of which the following isa specification.

i This invention relates to looks for doors Hereto'fore with locks suchas of the Yale type when it is desired to enter a locked door, bothhands are re quired, one to turn thedoor handle and one to unlock thedoor, necessitating the laying down of a bag or parcel that is beingcarried. It has also been found desirable that a person within a roomshould be undisturbed by any one possessing a. key opening the doortherewith from the outside, and further that a person should be able touse a room without being locked in by himself unless when desired. Theseobjections and requirements are met by this invention which consists inthe leading" features and combinations and arrangements of parts.herelnatter descrlbed.

The invention is illustrated in the accompanying drawlngs 1n whlch Fgure 1 is an elevatlon of a lock with its cover plate removed showingthe separateand simultaneous locking arrangements, combined in one lock.Fig. Qis a section taken through 2-2 on Fig. 1. Fig. '3 is an elevationota lock with its cover plate removed showing method of locking eachbolt separately.

Fig. 4 is apart end elevation of Fig. .3 and a part sectional elevationtaken through 1--4 on Fig. 3. Fig. 5 is a sectionahend elevation takenthrough 5-.5 on Fig. 3.

Fig. 6 is a perspective view ofa triggen.

Fig. 7 is a perspective view of a bolt and its several parts. Fig. 8 1sa plan of socket attachable to the trigger shown in Fig. 6

and is designed to engage with extensioir piece of outside key movement.F ig. 9 is a plan of socket attachable to the trigger shown in Fig. 6and is designed to. engage with squared extension of outer handle. Fig.10 is a part elevation of a lock with its cover plate removed, showingsimultaneous locking arrangement. Fig. 11 is a part sectional elevationthrough 11-11 on Fig. 10. Fig. 12 is an elevation of the inner face ofcover plate showing triggers and sockets in position. Fig. 13 is anelevation of inside of part of a door showing lock in position. Fig. 14is an elevation of outside of Specification of Letters Patent.Patgnfeflflflgp. Application filed October 25, 1920. Seria1.No.419,53t.

part of a door showing lock in position.

i Fig. 15 is an end elevation of part of a door showing lock in psition.

In these drawings, the casing 1, to which aroverplate 2 is secured .bymeans of a sultablescrew, which passes through hole 8 n1 cover plate2and screws into tapped hole at inthe casing 1, is mounted on the door 5in theordinary manner. The casing 1 is PIOVlflfllWltll two bolts 6 and7, one of them, preferably the upper one, being op .erated by the handle8 and the other or lower onebeing operatedby thekey of the Yale orsimilar type 9. The bolts 6 and 7 are ahke 1n every respect as shownparticularly in Fig. 7 and are each provided witha tongue 10 in whichare slots lland 12. The bolts (rand 7 are also provided with. pins l.8,sirings 14, bearing plates 15, and thrust plates 16, these latterbeingfree to move upon pins 13. Attached to. bottom of easing 1 and tounderside ofj'cover plate 2, and in alinement with one another are twopairs of triggers 17 one of whichis shown in Fig. 6. Thetriggers 17attached to the casing 1,a1'e operated by handles 18 V and 18 which areon the inside oi? the door i 5.; ,lhe triggers 17 attached to the coverplateiQ as shown in. Fig. 12, are provided withsockets 19 and 20, socketas in Fig. shaving a rectangular shaped slot to receive the extensionpiece 20 tromthe key mechanism 9, while socket 2O has a square shaped.slot to receive the squared extension piece of the handle 8. i i

In movingback ei her of the bolts 6 or 7 the trigger 17 is partlyrotatedto bear against bearing plates 15 causing the latter tomove back untilstopped by stops 22, thus withdrawing the bolt. At the same time springsMare compressed between the back of the bolt and compression plates 16which in turn bearagainst pins NOTEZ--BO1t 6 is shown in this positionin Figs. 1,-2and 3. Then pressure on the trigger is released,

the springs 14, automatically return the bolt to the position as shown.at bolt 7 in Figs. 1, 2,; 3, 5 and 10. Special apparatus is provided inthe casing 1 however to enable the bolts 6 and 7 to be secured, orlocked in either the withdrawn or extended positions, eitherindependently of each other, or simultaneously with one another. Asshown in Fig. 3, locking plates 25 and 25 movable vertically betweenguides 26 and operated independently by knobs 30 and 30*, see Fig.

I 13, engage in slots 11 to lock the-bolt in the positionas shown atbolt 6, Fig. 8, or engage with back face'lOF of tongue to lock the boltin the position as shown at bolt 7, F ig'. 3. Aspring operated pin 27engages in V grooves 28011 the side of locking plates 25 and 25 toprevent the locking plates from dropping out of contact. In Fig. 10 alocktongue 10 according to the position of the bolts 6 and 7 desired bythe operator. y In Fig. 1 both independent and simultanei ous lockingplates are shown, the former 5 25 and 25 being operated by knobs 30 and30frespec tively and the latter 29 by knob 32.

In this arrangement, locking plate 29 is provided with cranked extensionpieces 34 designed to engage in slots 12 on the upper edge of tongue 10when bolts are withdrawn, or on faces 10 of tongues 10 when bolts areextended. Locking plate 29 is provided with guides26, spring operatedpin 27 and. Vgr0oves 28 as before'described.

' Bolts (Sand 7 when extended engage in a suitable catch 31 secured tojamb 33 of the usual type,

' ,Inoperation, the bolts 6 and 7 aremovable as desired by means ofhandlesor key provided for same, but they maybe locked in either theextended or the withdrawn positionat the option of the person within theroom to which the door 5 gives ingress. Further the .bolts'j6 and 7 maybe locked either independently orsimultaneously as hereinafterdescribed.In Fig. 3 is shown a-lock innvhich the bolts 6 and 7 may be lockedindependently; the bolt 6 being locked when withdrawn by means of theknob 30 being pushed upward by the operator thereby causing the end 11'of the locking plate 25 to engage in the slot 11 of the 50. 7 {Shownlocked-in the extended position, the

tongue 10, the spring pin 27 engaging in V grooves of thelOClilIlgPlfltQ 25 :to prevent same from falling out of gear. -Bolt '71s knobf30, when moved upward causes the face 12 of the locking plate 2.a to engage with the face 10 of the tongue 10 spring pin 27 operating asbefore described. Bolts 6 and 7 may each be locked in either of thepositions shown in Fig. 3.

In Fig. 10 is shown a lock in which the bolts 6 and 7 are operated orlocked simultaneously by means of a knob 32, which when moved upwardlifts locking plate 29 causing the faces 12 of locking plate 29 toengage with the faces 10 of tongues 10 on both bolts. For the reverseposition of bolts 6 and 7 the faces 11 of the locking plate 29 engagesin slots 11 of both bolts. In each case the spring pin 27 engages in theV groove 28 as before described.

In Fig. 1 is shown a lock litted with both independent and simultaneouslocking arrangements the independent locking arrangement being operatedin exactly the same way as that shown in Fig. 3, while for thesimultaneous locking arrangement, the locking bar 29 operated by its ownknob 32 is placed into gear by a downward movement the extension pieces34 engaging either in the slots 12 of the tongues 10 or the faces 10 ofthe tongues 10, according to the position in which it is desired to lockthe bolts.

Having now particularly described and ascertained the nature of my saidinvention, and in what manner the same is to be performed, I declarethat what I claim is 1. A door lock including a casing, two latch boltsmounted in the casing, means for operating the bolts from the,outsideindependently of each other and means operable from the inside wherebyeither bolt may be secured in the open or in the locked positionindependently of each other, and both can be so secured simultaneously.

2. A door lock including a casing, two latch bolts mounted in thecasing, a handle for operating one of the bolts from the outside, a keyfor operating the other bolt from the outside independently of thehandle operated bolt and means operable from the inside whereby eitherbolt can be secured in the open. or in the locked position independentlyof each other or both may be so socured simultaneously.

8. A look as claimed in claim 2 wherein the means for operating thebolts from the inside consists of a pair of independent stops and asingle common stop.

ARTHUR JEFFERSON WYCHERLEY.

Witnesses ANDREW JOHN PARK, ANDREW JOHN PARK, Jr.

